Automatic musical instrument.



RBCKBR.

AUTOMATIC MUSICAL INSTRUMENT.

APPLIGATION FILED APR. 14, 1910.

Patented 0011.27, 1914.

3 SHEETS-SHEET 1.

WIT/VESSES BY @www Mfg A TTOR/VEYS THE MORRIS PETERS C01. PHUTU-LITHOWASHINCIUN n l:

E. BGKBR.

AUTOMATIC MUSICAL INSTRUMENT.

APPLICATION FILED APR.14, 1910.

1,1 15,883. Patented 0015. 27, 1914.

N11-E 11H-5- l/V VEN TOI? wc Wale/Gf WITNESSES: l

THE NOF-1R15 PETERS C0., PHorU 1.ITHO..WA5HINGION. D. r.'v

E. BGKER.

AUTOMATIC MUSICAL INSTRUMENT.

APPLICATION FILED APR. 14, 1910.

1,1 15,883. Patented 00u. 27, 1914.

W/TNESSES INI/ENTOR WMM By l1/MMF mmf/47%# ERNST BCKER, on NEW Yoan, N.Y.

AUTOMATIC MUSICAL INSTRUMENT.

Specification of Letters Patent.

Patented Oct. 27, 1914.

Application filed April 14, 1910. Serial No. 555,534.

To all whom t may concern:

Be it known that I, ERNST Bonnn, a citizen of the United States, andresident of the borough of Manhattan, city, county, and State of NewYork, have invented certain new and useful Improvements in AutomaticMusical Instruments7 of which the following is a specification.

My invention relates to automatic musical instruments and has for itsobject to provide a structure comprising a major instrument in which themain operating mechanism is located and in which certain musical elfectsare produced and a seconda-ry instrument located at a distance from thevmain instru-v ment and controlled by the mechanism in said maininstrument, for producing certain other musical effects as for instancethat of an echo, or of another instrument playing at a. distance.

To this end my invention consists in certain combinations andconstructions of parts which will be hereinafter fully described and thenovel features of which will be pointed out in the appended claims.

Reference is to be had to the accompanying drawings in which- Figure lis a diagrammatic view illustrating my invention; Fig. 2 is a. frontelevation of the major or main instrument; Fig. 3 is a rear viewthereof; Fig. 4 is a front elevation of the auxiliary or secondaryinstrument; Fig. 5 is av rear view thereof; Fig. 6 is an enlarged detailsection on the line 6 6 of Fig. 3 and Fig. 7 is a similar view in theline 7-7 of Fig. 4.

In the drawings l represents the major or main instrument in which islocated the motori? which as shown may be an electric motor although aspring motor or a motor of any other k ind suitable for the purpose maybe employed if desired. The drive shaft of this motor is connected bymeans of a chain or belt3with a drive wheel l secured on a shaft 5journaled in suitable stationary bearings (i.

A pinion 7 is carried by the drive wheel shaft 5 and is connected bymeans of a chain or belt S with a sprocket wheel or pulley 9 whichserves to operate the usual perforated music sheet 10. The said belt orsprocket chain 8 passes over a tension pulley 1l joun naled in asuitable stationary portion of the instrument which pulley may beadjusted to take up any slack in said chain or belt in the well knownmanner. The music sheet l0 travels from a roller l2 carried by a shaft13 journaled in suitable bearings over a series of levers il to a takeup roller l5 secured to a shaft 16 which is mounted in stationarybearings on a suitable portion of the `instrument and is driven in thecustomary levers il are connected with downwardly depending rods Q2 thelower ends of which are secured to valves 23 controlling channels 24located in said support 19. T he said valves 23 close the said channelsagainst the admission of air and are normally maintained in position toclose the ends of channels 2st against the tension of leaf springs 25 bymeans of the note sheet which prevents the said springs from actuatingsaid valves and levers as clearly shown in Fig. l. The channels Ql areconnected by means of tubes 30 with channels 31 located in the lowerwall of an exhaust chamber 33 and each having one end located beneath adiaphragm 35. rThe exhaust chamber 33 communicates, through the mediumof tubes 36 and 3621 with exhaust bellows 3T and 37a which are operatedto produce a vacuum or suction in said chamber 33 by oppositelyextending rods 38 and 38a. These rods 38 and 38a are connected with theshaft 5 of the drive wheel Ll and are reciprocated to actuate thebellows 37 and 3Ta as the said wheel 4 is rotated by the motor. In otherwords, as the wheel l rotates the bellows 3T is collapsed and thebellows 37 is expanded and then the bellows 3Ta is collapsed and thebellows 37 is expanded so as to produce a continuous and not anintermittent suction in said chamber 33.

The diaphragm 35 carries an upwardly extending rod 39 near the free endof which is located a valve 4l() controlling' passages /ll and whichcommunicate respectively with the chamber 33 and the atmosphere. Thesepassages 41 and 42 are each in communication with channels 43 located inthe upper wall of said chamber 33, a certain number of said channelsbeing connected with pneumatics 44. The movable member of each pneumatic44 is provided with an extension 45 carrying a rod 46 suitably guided inits vertical movement in a guide 47 and having its free end inengagement with the levers forming part of a piano action a portion ofwhich is shown in Fig. l the remainder being omitted for the sake ofclearness as the same forms no part of the present invention. Certainother channels 43 instead of communicating with the pneumatics 44 areconnected with a bellows 48 which in turn communicates through themedium otra tube 49 with a chamber 50. rlhis suction chamber 50 is alsoin communication in the well known manner with a number of devices 5lfor producing the effects of various musical instruments preferablylocated in the upper portion of the instrument l. Thus as the musicsheet 10, which as before stated is of the usual perforated kind, isoperated or caused to travel over the levers 14, the ends 2O of saidlevers will drop into the apertures oi said music sheet in the usualway, the roller 21 being grooved to make this possible. As the said ends2O of the levers 14 thusenter the said recesses or perforations of themusic sheet resistance to the action of the springs 25 will be removedso that said springs will cause the opposite ends of said levers to bedepressed and the respective valves 23 to be moved away from the ends ofthe channels 24. The said channels are by this operation of the valvesopened to the atmosphere which raises diaphragm 35. As the respectivediaphragm 35 is raised in this manner it causes the corresponding valve40 to be lifted and establishes communication between either theparticular pneumatic 44 and the chamber 33 to cause the said pneumaticto collapse and operate the piano action or between the said chamber 33and the bellows 48 to cause said bellows to operate either or any of thedevices 51. 1n other words as long as the valves 23 close the channels24 the diaphragme 35 will not be raised, but the moment the valve 23 ismoved away from its channel 24 the corresponding diaphragm willtherefore be raised as described. 1t is to be understood that any numberoi' these devices and the piano action may be operated simultaneously togive various orchestral effects, the same depending only upon the numberoi perforations in the music sheet which register with the variouslevers 14 at the same time. So far the devices described may be of anywell known character and form no part of my invention.

The channels 43 in addition to communieating either with the pneumatics44 or bellows 48 are further each in communication with a pneumatic 52through the medium of a tube 53. The movable member of each pneumatic 52is provided with an extension 54 having its tree end connected with avertically movable stem 55 on which the valves 56, and 57 are mounted.These valves 56 and 57 control a passage 58 connected with a pressurechamber 59 and an exhaust or suction chamber 60, the compressed airbeing forced into the chamber 59 through a tube 6l by means of thepressure bellows 28 while the air is exhausted from and suction producedin the chamber 60 through a tube 62 by means of the suction bellows 37.The pneumatics 52 and the structure forming the chambers 59 and 60 arepreferably located on the portion of the main instrument although ifdesired the said elements may form part of the secondary instrument.Each passage 58 connects with a channel 63 located in the partition wallseparating the chambers 59 and 60. Each of the said channels 63communicates with a tube 64 which extends beneath a diaphragm 65 in thelower wall oi a suction chamber 66. Each diaphragm 65 carries anupwardly eX- tending stem 68 to which is secured the valve 69 located inthe valve chamber 70 and controlling the passages 71 and 72communicating respectively with the suction chamber 66 and theatmosphere. The valve chambers are each connected by means of a tube 73with a channel 74 formed in a block 7 5 and communicating with apneumatic 76 a series of which is secured to the lower face of saidblock. The movable member of each of the pneumatics 76 is provided withan eX- tension 77 to the free end of which is secured an upwardlyextending valve stem 78 which carries the two valves 79 and 80. Eachpair of these valves 7 9 and 8O controls a passage 8l in the lower wallof a pressure chamber 82, said passages 8l each communicating with saidchamber 82 and also with the atmosphere. Channels 83 are located in thewalls of said chamber 82 and establish communication between passages 8land organ pipes 84 as clearly shown in Fig. 1.

The suction chamber 66 is connected with a suction bellows 85 by meansof a tube 86, while the pressure chamber 82 communicates with a pressurebellows 87 through the medium of a pipe 88. Both. of these bellows 85and 87 are operatively connected with a drive wheel 89 which in turn isconnected with a motor 90 of any suitable kind by a driving belt orchain 91. rl'husv as the motor 90 is actuated, it will rotate the drivewheel 89 which in turn will operate the bellows 85 to produce suction inthe chamber 66 and the bellows 87 to produce pressure in the chamber 82.

The chambers 66 and 82, pipes 84 and their relative parts together withthe bellows .85 and 87 and the motor 90 and connected levers.

parts are mounted in a case 92 and form the secondary or auxiliaryinstrument. This secondary instrument is located at a distance from themain instrument and is preferably concealed so that its presence and theeffects caused by said instrument are not easily located.

It is to be understood that a part of the series of levers 14 controlsthe operation of the musical 'devices in the main instrument, while theremainder of said series of levers 14 controlsthe operation of the'secondary instrument and that the music sheet used in connection withmy invention is perforated correspondingly. It isto be furtherunderstood that preferably only one instrument is in operation at anygiven time, or in other words when the main instrument is playing thesecondary instrument is inoperative and vice versa. In order toautomatically cut off one or the other instrument I provide tubes 92,92a and 92b which extend from passages in the support 19 (similar to thechannels 24) to and beneath diaphragms 93, 94 and located in the lowerwall of a suction chamber 96. Valves 23-andl levers 14a, 1.4b and 14csimilar to the levers 14 and operated by the music sheet in the same waycontrol saidpassages in the same manner as hereinbefore described. Eachdiaphragm 93, 94 and 95 is provided with a stem 97 which stems carryrespectively valves 98, 99 and 100 each located in a separate valvechamber v101, 102 and 103 communicating with the suction chamber 96through the medium of apertures 104, the said chambers 101 and 102 alsocommunicating with the atmosphere through the medium of apertures 105.The chamber 103, it is to be understood, is closed against the admissionof atmospheric air and is not provided with an aperture corresponding tothe apertures 105. The valve chamber 101 is connected by means of a tube106 with a pneumatic 107 located on a stationary support 108 and thechamber 102 communicates by means of a tube 109a with a similarpneumatic 109, also carried by said support 108. The movable member' ofthe pneumatic 109 carries a valve stem 110 to which issecured a valve111 which controls a normally open chamber 112 connected with the valvechamber 103 through the medium of a tube 113. The chamber 112 is furtherconnected by means of a tube'114 with a pneumatic 114 secured toa/stationary support 115 and having its movable member provided with arod 116 extending through a guide 117 on the support 115. The free endof this rod is located in close proximity to a plate 118 hinged at 119to a stationary support 120 and of a width corresponding to the distancebetween extreme end levers 121 forming part of the piano action so as tobe co-extensive with the entire series of said This plate 118 ismaintained in an inoperative position by means of a spring 122 and iscapable of being swung to a position over all of the levers 121 torender same inoperative as will be more fully described hereinafter.`The pneumatic 109 is maintained in an expanded condition by means of aspring 123 and has its movable member provided with an extension or lip124 adapted to coperate with the hooked end 125 of a bell crank lever126 pivoted at 127 on the support 108. The said bell crank lever 126 iscontrolled by a spring 128 and engages a projection 129 secured to themovable member of the pneumatic 107 as clearly shown in Fig. 1.

The tube 106 is connected by means of a branch tube 130 with a pneumatic131 located on a stationary support 132 and the tube 109a is connectedthro-ugh the medium of a similar branch tube 133 with a similarpneumatic 134 also secured to the support 132. A spring pressed latch135 is pivoted at 136 on the support 132 and is provided with a hook 137arranged to coperate with a projection 138 on the movable member ofv thepneumatic 134 and further is controlled by a projection 139 on themovable member of the pneumatic 131. The movable member of the pneumatic134 further carries an extension 140 to the free end of which is secureda rod 141 extending through the wall of a valve chamber 142 and havingits free end pivotally secured to a flap valve 143.` The said valve 143is pivoted at 144 and is normally maintained against its seat 145 bymeans of a spring 146. The Said seat 145 divides the chamber 142 intotwo parts, said chamber forming part of the pipe or tube 61 'which isconnected with the compression chamber 59.

The branch tube 130 is connected by means of a tube 147 with a pneumatic148 secured to a stationary support 149 and having its movable memberprovided with an apertured extension 150 through which a verticallymovable rod 151 extends. This rod 151 carries at its upper end anenlargement 153 and at its lower end a switch member 154 and is guidedin its vertical movement in guides 155 on the support 149. The said rodis maintained in its'raised position by means of a latch lever 156coperating with a projection 157 on said rod and pivoted at 158 on thesupport 149, said lever being held in engagement with said projection157 by means of aspring 159. The said latch lever is connected by meansof a link 160 with the movable member of a pneumatic 161 also located onthe support 149 and connected through the medium of a tube 162 with thebranch tube 133. The switch `memberu154 which as shown forms part of anected by means of wires 164 with the motor 90 which drives the Winddevice of the secondary instrument.

In operation the motor 2 is started by manually throwing in a suitableswitch to operate the different bellows for producing suction andpressure in the various chambers in the main instrument. As soon as thishas been done the music sheet 10 begins to travel over the series oflevers 14 which are operated as the different perforations of said musicsheet are brought into registry with the ends 20 thereof. As long as theperforations in said music sheet are such as to operate only thoselevers which control the devices in the main instrument only thesedevices will be actuated andthe effect will be that of the instrumentplaying close by. During this playing of the main instrument the valve143 is closed so that the secondary instrument is cut olf, that is nocompressed air can be forced into the chamber 59 and consequently evenif the pneumatics 52 should be operated this would have no eifect y tooperate the musical devices in the secondary instriunent. However, assoon as the secondary instrument is to be thrown in and the maininstrument discontinued a properly located aperture in the music sheetwill be brought into alinement with the end of the lever 14bwhich willaccordingly drop into said opening and will permit the particular spring25 to remove the cooperating' valve 23 from the mouth of the channel 24with which the tube 92a is connected. The said tube being thus opened tothe atmosphere the diaphragm 94 will be raised and the valve 99 operatedto close the valve chamber 102 against the 'atmosphere and open it tocommunication with the suction chamber 96. The tube 109a will throughthis operation be connected with the said suction chamber 96 and thepneumatic 109l will accordingly be collapsed against the tension of itsspring '123 and will be locked in this position by means of the latch125 which vill snap into engagement with the projection 124. In thispositionk of the pneumatic 109 the valve 111 closes the chamber 112against the admission of atmospheric air so as to practically connectthe tubes 113 and 114. Simultaneously with or at about the same time asthe end of the lever 14b drops into the tune sheet aperture the endofthe lever 14C drops into a similar aperture in said tune sheet andoperates its connected valve 25 in the same way to open the tube 92b tothe atmosphere to raise the diaphragm 95 and with it the valve 100. Thiscauses lthe valve chamber 103 to be thrown into connection with saidsuction chamber 96 and also connects said tube 113 with said suctionchamber and through the medium of the chamber 112 and tube 114 collapsesthe pneumatic 114% As the said pneumatic that all the other musicaldevices inthe main instrument are cut out in a similar manner at thesame time. As the valve 99 is raised in the manner described and thetube 1092L is connected with the suction chamber 96, the branch tube 133and the tube 162 which communicate therewith will also be connected withsaid suction chamber 96 so `that the pneumatics 134 and 161 will also becollapsed and pneumatic 134 will be locked vin this condition by thelatch 137. As the pneumatic 134 isy thus collapsed the valve 143 willthrough the connection 141 be opened to permit compressed air to beforced into the chamber 59. At the same time the collapsing of thepneumatic 161 will swing the latch 156 on its pivot and thus release'the projection 157 to permit the rod 151 and switch member 154 to dropby gravity into engagement with the switch member 163 to close theelectrical circuit and start the motor 90 and consequently the variousbellows in the secondary instrument to produce suction and compressionin the several chambers in said secondary instrument.

As the music sheet now continues to travel the perforations therein willoperate the levers 14 to control the secondary instrument in thefollowing manner: As the end 20 of a lever 14 drops into an aperture inthe music sheet, the connected valve 23 will `be lowered as beforedescribed, it being `understood that each spring 25 tends to ldraw thecorresponding valve downwardly. 'As soon as a valve 23 has been moved asabove described air will be admitted to channel 31 and will raise adiaphragm 35' andv with it a connected valve 40 and will bring apneumatic 52 into communication with the exhaust chamber 33 through themedium of a tube 53 and channel 43. As this takes place the saidpneumatic 52 will be collapsed and will raise the valve stem 55 and withit the valves 56 and 57 so as to cut oft communication between thesuction chamber 60 and a channel 63., and establish communicationbetween said channel 63 and the pressure chamber 59. Compressed air willrush through said channel 63 and connecting tube 64 under the diaphragm65 and will raise the diaphragm and with it the stem 63 and valve 69.This will bring n a bellows 7 6 into connection with the suction chamber66 through the medium of a tube 73 so that said bellows 76 will becollapsed. As the bellows 7 6 is thus collapsed the stem 78 and with itthe valves 7 9 and 80 will be raised so as to close the passage 81against communication with the air and nel and the tube 53 and willexpand the to open it to communication with the pressure chamber 82. Thecompressed air contained in this chamber, or some of it will rush intosaid passage 81 and through the channel 83 to the corresponding pipe 84which will accordingly be sounded. During this operation some of thesuction has a tendency to operate the pneumatics 44 and piano action andother musical devices in the main instrument. These musical devices inthe main instrument however being held against operation or cut olf thistendency has no effect. As soon as the end 20 of the lever l14 leavesthe perforation in the note sheet the corresponding valve 23 will closethe passage 24 against communication with the atmosphere. As soon as thevalve 23 again closes 'the channel 24 which it governs the weight of thecoperating valve 40 will cause it and its diaphragm 35 to resume theirinitial positions and will cut off the connection between the channel 43and the suction chamber 33 and will open said channel to the atmosphere.Atmospheric air will rush into said chanpneumatic 52 so as to lower thevalve stem 55 and with it the valves 56 and 57. Communication betweenthe pressure chamber 59 and the diaphragm 65, through the tube 64 andchannel 63 will thus be cut off and the said diaphragm will be broughtunder the influence of the suction chamber 60 owing to the fact that thevalve 57 has been moved away from'one end of the passage 58 while thevalve 56 has been moved to close the opposite end of said passage. Thediaphragm 65 will now be returned to normal position owing to thesuction and the valve 69 will close the passage 71 and open the passage72. This will permit atmospheric air to enter the tube 73 and channel74A and will expand the pneumatic 76 to its normal position so as tolower the valves 79 and 80 and close the passage 81 and channel 83 thusshutting off the compressed air from the corresponding pipe 84 which isaccordingly silenced. These pipes it will readily be seen may beoperated in different combinations so as to produce `various effects asfor instance that of a quartet, which owing to the location of thissecondary instrument will appear to be singing at a distance. Suctionmay be produced continuously in the chamber 60 if desired even when thesecondary instrument is otherwise cut off as this would have no effectowing to the fact that the compression chamber 59 is cut o, or suctionmay be produced in said chamber only after the motor 90 has beenstarted. A portion of a selection may therefore be rendered in the maininstrument and the remainder, as for instance the chorus, may be playedon the secondary instrument or a complete selection may be successivelyplayed on each instrument. Further, first one instrument may be operatedand then the other at various points throughout a single selection asdesired the intention being to produce one musical effect close by ornear at hand and another musical effect in the distance or far away. Atthe point where it is desired to discontinue the secondary instrumentand again throw in the main instrument the tune sheet is provided withan aperture into which the end of the lever 14a is arranged to project.As soon as said aperture registers with the end of said lever 14a theconnected valve 23 will be lowered to open the tube 92 to the atmosphereand thus raise the valve 98. This will connect the tube 106 with saidsuction chamber 96 and will collapse the pneumatic 107 and swing thelever 126 on its pivot and the latch 125 out of engagement with or awayfrom the projection 124 and permit the spring 123 to return thepneumatic 109 to its expanded condition. This will raise the valve 111and disconnect the tube 113 and 114 and permit atmospheric air to enterthe tube 114 to restore the pneumatic 114a to its normal or expandedcondition so as to withdraw the rod 116 from engagement with the plate118. The spring 122 as soon as this happens will swing said plate awayfrom the levers 121 which are therefore again free to be operated itbeing understood that simultaneously therewith all the other musicaldevices in the main instrument are again thrown in by similar means.

At the same time that the pneumatic 114 is operated as just describedthe pneumatic 131 will also be collapsed through the medium of the tube130 and its connection with the tube 106 and will swing the latch 137away from the projection 138 and release the pneumatic 134 which willclose the valve 143, the spring 146 serving to return said valve 143 toits closed position and the pneumatic 134 to its expanded condition.Simultaneously with this operation or practically so the pneumatic 148will be collapsed owing to the fact that it is connected with the branchtube 130 through the medium of the tube 147 and will raise the switchmember 154 away from the switch member 163 to break the electricalcircuit and stop the motor 90. As the switch member 154 is thus actuatedthe projection 157 will also be raised and the latch 156 will snapthereunder to maintain it n its raised position until again released bythe operation of the pneumatic 161 as herein before described. Theopening in the note sheet which operates the lever 14b need only be ofsmall dimension as the said lever 14b need only be operated for a spaceof time long enough to collapse the various pnuematics 109 and 134 whichwill be maintained in their collapsed condition by 'means oftherespective latches 125 and 137. The pneumatic 114a remains collapsed aslong as the pneumatic 109 is collapsed during which time the valve 111seals the chamber 112 and prevents atmospheric air from entering thetube 114 and expanding said pneumatic 11452 The aperture which operatesthe lever 1&1c need also only be a small one as it is only necessary toraise the valve 100 long enough to collapse the pneumatic 1111-a afterthe valve 111 has been lowered to seal the chamber 112. Likewise theopening` controlling the operation of the lever 14a is ofsimilar size tocause the collapsing of the pneumatics 131 and 148 which may almostimmediately -be permitted to resumektheir normal condition. Thenecessity for extremely long perforations or apertures with theconsequent weakening of the tune sheet is thus done away with. 1fdesired the chamber 66 and its coperating parts may be omitted, in whichcase the tubes 64 would be connected directly with the pneumatics 76 andthe pressure in the chamber 59 would be changed to exhaust. 1n thisinstance, therefore, the chamber 59 would become an exhaust chamber aswell as the chamber 60 and the valve 56 would be left off. Thus thepneumatics 52 would be operated as hereinbefore described and the valve57 would be raised to subject the pneumatics 76 directly to the suctionin said chambers 59 and 60. therwise the device would operate trie sameas before.

An operating device similar to that which operates the switch 154i, 168and with similar connections may be provided for operating the switchwhich controls the motor 2 to break the circuit and thus stop theinstrument entirely, it being understood that an aperture or perforationis provided in the tune sheet at the end of a selection for thispurpose. instead of operating both instruments pneumatically the samemay be operated electrically by substituting wires for the various tubesand providing magnets for collapsing the various bellows or pneumaticsor similar devices it being understood of course that the wires areconnected with a suitable source of electricity and that the levers 14,14a, 14th and 14C would in this case periodically close and open thecircuits. With my construction it is possible to operatev eachinstrument successively to produce various efects for instance that ofan 0rchestra playing'close by and then an echo thereof at a distance orof a different musical effect in the distance as for instance thesinging of a quartet.

Changes in the specic construction shown and described may be madewithin the scope of the claims without departing from the spirit of myinvention.

I claim:

1. In an automatic musical instrument,

the combination of a main musical instrument, a secondary musicalinstrument, separate independent driving means for operating eachinstrument and means controlling the -operation of the sounding devicesof both instruments and operated by the driving means in one instrumentand adapted to also control the operation of the driving' means in theother instrument.

2. ln automatic musical instruments, the

combination of a main musical instrument, a secondary musicalinstrument, separate independent motors for independently operating eachinstrument, and 'means operated by the motor in said main instrument forstart-l note sheet, separate driving means for thesecondary instrumentand devices on said note sheet for controlling the operation `of thedriving means of said secondary instrument. I

e. In automatic musical instruments, the combination of a main musicalinstrument provided with sounding devices, a secondary musicalinstrument provided with soimding devices and located at a distance fromthe main instrument, separate means for actuating said sounding devicesin each instrument, means located in one instrument for controlling theoperation of the sounding devices in both instruments and means forrendering the sounding devices in one instrument inoperative and forsimultaneously rendering the sounding devices in the other instrumentoperative.

5. ln automatic musical instruments, the combination of a main musicalinstrument, a secondary musical instrument located at a distancetherefrom, means for operating said instruments, means for throwing oneof said instruments out of operation, a valve controlling the otherinstrument and means for bringing about the operation of said means andsaid valve simultaneously.

6. In automatic musical instruments, the combination of a main musicalinstrument, driving means for said main instrument, a secondary musicalinstrument located at a distance from said main instrument, drivingmeans for said secondary instrument, a connection between saidinstruments, a note sheet operated by one of said driving means andadapted to control `either lof said instruments and devices on said notesheet for bringing about an `operative relation between either of thesaid instruments and said note sheet.v

7. In automatic musical instruments, the combination of a main musicalinstrument, a note sheet, means for actuating said note sheet, devicescontrolled by said note sheet for normally operating the sound producingdevices in said main instrument, av secondary musical instrument,independent driving means therefor, means controlled by said note sheetfor concurrently bringing the sound producing devices in the secondaryinstrument under the control of said note sheet and for starting thedriving mechanism of said secondary instrument, additional meanscontrolled by said note sheet for rendering the sound producing devicesin the main instrument inoperative and means controlled by the notesheet for returning the parts to their normal condition.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses. n

ERNST BOCKER. Witnesses:

JOHN A. KEHLENBECK, M. H. LocKWooD.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

